<script>
    //  多行
    let string1 = `Dear John,
    long time no see.`
    console.log(string1)
    // 字符串调用变量
    let name = "Mike"
    let age = 28
    let string2 = `My name is ${name}, I am ${age+1} years old next year;`
    console.log(string2)
    
    // 字符串调用函数
    function f() {
        return "have fun!"
    }
    let string3 = `${f()}`
    console.log(string3)
    
</script>


